The MediaWiki-extensions-Score extension has a constant CACHE_VERSION which when changed, updates the hashes of all the LilyPond files, thereby re-generating them, along with the output image and audio files. It is however possible to specify a MIDI file to be processed by the extension. In that case, we also want the output audio to have this cache invalidation feature.
The task is to add the cache version constant to the file hash variable. This is a simple task, and I (@Ebe123) will mentor.